Microwave oven



FIG. 1 is a Perspective view of microwave oven showing the new design:

FIG. 2 is a Front Elevation View thereof;

FIG. 3 is a Rear Elevation View thereof;

FIG. 4 is a Left-side Elevation View thereof;

FIG. 5 is a Right-side Elevation View thereof;

FIG. 6 is a Top Plan View thereof; and,

FIG. 7 is a Bottom Plan View thereof. 

We claim the ornamental design for microwave oven, as shown and described. 